สถิติ
เปิดเมื่อ28/01/2015
อัพเดท10/11/2023
ผู้เข้าชม1753599
แสดงหน้า2215779
ปฎิทิน
May 2024
Sun Mon Tue Wed Thu Fri Sat
   
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
สมาชิก

สมัครสมาชิก | ลืมรหัสผ่าน

ทังสเตนคาร์ไบด์

อ่าน 531382 | ตอบ 7807
ทังสเตนคาร์ไบด์
       ทังสเตนคาร์ไบด์ (อังกฤษ: tungsten carbide) มีสูตรเคมีคือ WC ในรูปพื้นฐานจะมีลักษณะเป็นผงสีเทาละเอียด มี 2 โครงสร้างคือแบบหกเหลี่ยม (α-WC) และแบบลูกบาศก์ (β-WC)
 
       ทังสเตนคาร์ไบด์เตรียมได้จากการทำปฏิกิริยาระหว่างทังสเตนกับคาร์บอนที่อุณหภูมิ 1400–2000 °C[3] หรือให้ความร้อนกับทังสเตนไตรออกไซด์และแกรไฟต์โดยตรงที่ 900 °C หรือในแก๊สไฮโดรเจนที่ 670 °C ตามด้วยการคาร์บิวไรเซชันในแก๊สอาร์กอนที่ 1000 °C[4] หรือใช้วิธีการเคลือบด้วยไอเคมี เช่น
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะคลอไรด์กับไฮโดรเจนและมีเทนที่อุณหภูมิ 670 °C (1,238 °F)
 WCl6 + H2 + CH4 WC + 6 HCl
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะฟลูออไรด์กับไฮโดรเจนและเมทานอลที่อุณหภูมิ 350 °C (662 °F)
                WF6 + 2 H2 + CH3OH → WC + 6 HF + H2O
       ทังสเตนคาร์ไบด์มีจุดหลอมเหลวที่ 2,870 °C (5,200 °F) และจุดเดือดที่ 6,000 °C (10,830 °F) มีความแข็งระดับ 9 ตามมาตราโมสและประมาณ 2600 ตามมาตราวิกเคอส์[5] ทังสเตนคาร์ไบด์มีความแข็งเกร็งมากกว่าเหล็กกล้าประมาณ 2 เท่า มีค่ามอดุลัสของยังประมาณ 530–700 GPa (77,000–102,000 ksi)[2][6][5][7] โมดูลัสของแรงบีบอัด 630–655 GPa และโมดูลัสของแรงเฉือน 274 GPa[8]
 
ด้วยคุณสมบัติความแข็งและทนความร้อนสูง ทังสเตนคาร์ไบด์จึงใช้ทำเป็นเครื่องมือตัดหรือหัวเจาะ ใช้ทำกระสุนเจาะเกราะ เครื่องมือผ่าตัด อุปกรณ์กีฬา เครื่องประดับและอื่น ๆ
 
 
 
 
 
 
 
 
 
 
อ้างอิง
 
  1. Kurlov, p. 22
  2. Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.
  3. Pierson, Hugh O. (1992). Handbook of Chemical Vapor Deposition (CVD): Principles, Technology, and Applications. William Andrew Inc. ISBN 0-8155-1300-3.
  4. Zhong, Y.; Shaw, L. (2011). 'A study on the synthesis of nanostructured WC–10 wt% Co particles from WO3 , Co3O4 , and graphite'. Journal of Materials Science 46 (19): 6323–6331. Bibcode:2011JMatS..46.6323Z. doi:10.1007/s10853-010-4937-y.
  5. Groover, Mikell P. (2010). Fundamentals of Modern Manufacturing: Materials, Processes, and Systems. John Wiley & Sons. p. 135. ISBN 978-0-470-46700-8.
  6. Kurlov, p. 3
  7. Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. Springer Science & Business Media. pp. 640–. ISBN 978-1-84628-669-8.
  8. Kurlov, pp. 30, 135
  9. Sprince, NL.; Chamberlin, RI.; Hales, CA.; Weber, AL.; Kazemi, H. (1984). 'Respiratory disease in tungsten carbide production workers'. Chest 86 (4): 549–557. PMID 6434250. doi:10.1378/chest.86.4.549.
  10. 12th Report on Carcinogens'. National Toxicology Program. http://ntp.niehs.nih.gov/go/roc12. เรียกข้อมูลเมื่อ 2011-06-24.
ความคิดเห็น :
6278
อ้างอิง

Jerry
I blog often and I genuinely appreciate your content. Your article has truly peaked my interest. I'm going to bookmark your website and keep checking for new details about once a week. I subscribed to your RSS feed as well.
 
ลิงค์ที่เกี่ยวข้อง : https://avadate.net
Jerry [149.56.116.xxx] เมื่อ 18/09/2023 12:17
6279
อ้างอิง

revyline

Sonic Toothbrush: Revolutionizing Oral Care

**1. Sonic Technology:

Sonic toothbrushes use high-frequency vibrations to create rapid movements of the bristles, providing thorough cleaning and removing plaque and debris from the teeth and gums.
The vibrations generate sonic waves that reach places beyond the bristles, offering a deep and gentle clean.

**2. Vibration Speed:

Sonic toothbrushes typically operate at a high frequency, ranging from 20,000 to 40,000 brush strokes per minute.
This high speed allows for efficient cleaning, breaking down plaque and stains effectively.

**3. Cleaning Action:

The rapid movements of the bristles create a scrubbing action similar to manual brushing but on a much larger scale.
The scrubbing action dislodges plaque and bacteria from the teeth, gums, and hard-to-reach areas.

**4. Benefits of Sonic Toothbrushes:

Effective Plaque Removal: Sonic toothbrushes offer superior plaque removal compared to manual toothbrushes due to their high-speed vibrations.
Gentle Cleaning: Despite the high speed, the vibrations are gentle on the teeth and gums, making it suitable for those with sensitive teeth.
Improved Gum Health: Sonic technology can stimulate blood circulation in the gums, promoting better gum health.
Whitening Effect: The scrubbing action helps in removing surface stains, contributing to a brighter smile.

**5. Features:

Multiple Cleaning Modes: Sonic toothbrushes often come with various cleaning modes such as clean, sensitive, massage, and whitening, allowing users to customize their brushing experience.
Timers: Built-in timers encourage users to brush for the recommended two minutes and often include intervals for different sections of the mouth.
Pressure Sensors: Some sonic toothbrushes have pressure sensors to prevent excessive pressure on teeth and gums, reducing the risk of overbrushing.

**6. Maintenance:

Sonic toothbrushes require regular charging, and many come with charging bases or USB chargers.
Brush heads should be replaced every three months or as recommended by the manufacturer to maintain optimal cleaning performance.
**7. Popular Brands:
Sonicare by Philips
Oral-B
Waterpik
Colgate
**8. Conclusion:
Sonic toothbrushes are a significant advancement in oral care, offering efficient and gentle cleaning with their high-frequency vibrations. Investing in a sonic toothbrush can lead to improved oral hygiene, better gum health, and a brighter smile. As with any oral care routine, it's essential to combine the use of a sonic toothbrush with regular flossing and dental check-ups for optimal dental health.
Website: https://revyline.ae/electric_toothbrushes/
 
revyline [137.59.221.xxx] เมื่อ 18/09/2023 12:47
6280
อ้างอิง

Natasha Roy
Have you ever questioned what it would resemble to get Hyderabad Escorts solution from celebs like television actresses, Bollywood starlets, southern Indian starlets, and versions? You should hire Celeb companions for your best buddy. These ladies are from the excellent globe so they likewise wish to produce a solitary world around them by examining with new customers.
They supply Hyderabad Escorts Service secretive but only to some chosen males. These Hyderabad Escort are the excellent suit for you if you enjoy to be a high character and also professional escort. These qualified and cultured companions are so stylish that you wish to suck her up regularly. She has a fervent habits that aids her to obtain rough in bed. These companions like to include journey to their life by being accustomed with a new personality.
Take the best sip of the secret restorative with superstar females
People that are constantly looking for premium Escorts in Hyderabad solutions for friends then these companions are ideal for you. Celebrities take pride in offering an elite solution for their consumers. They are not in the Escort Hyderabad organization simply to get laid by males they are below because they wish to gain an additional income. They additionally enjoy well estimable physic, tall elevations, and also well-groomed behavior along with the wanted perspective that is required for obtaining intermingle well in very high profile societies.
Further, if you are looking for the best buddy for celebrations, nightclubs, malls, markets, and also various other happing areas after that these Russian Escorts Hyderabad are a complete bundle that will offer your needs in the very best possible method. In addition, most model companions are ideal even for in-call solutions where you will get all the conveniences. Many individuals believed that spending quality time with a celeb escort can be challenging to reveal their wishes pleasantly yet this is wrong, they recognize all the internal desires of their clients. Whether, it is dating, romancing, or costs sensual minutes these are the most effective and also comfortable companions.
Make your dream accomplish with friendly nature celebrity escorts
Many individuals assume that these Hyderabad Celebrity Escorts have a high course of mindset so they are not the perfect buddy for their profile however this is the wrong conception. These escorts have a classy perspective but have a friendly manner that you constantly find it simple to express your love, love, and libidos. You can firmly pledgee them for filthy talks, sexual activity, as well as various other behaviors that you desire.
Besides this, you will certainly discover all type of solutions with these celeb escorts. You can share drinks and smoke with these Hyderabad Call girls they will don't bother you as well as supply you the most effective buddy you want. These escorts reveal an easy-going method whether you tell them to strip, play rowdy sex video games, supply blowjobs, as well as trying out wildish sexual moves that you have desired for. So as to get the best solutions for these escorts, one need to always join a trusted Somajiguda Escorts firm. At the best firm, you will always discover real as well as reliable escorts in Hitech City that you are constantly searching for to satisfy your desires.
 
Natasha Roy [45.121.2.xxx] เมื่อ 18/09/2023 13:36
6281
อ้างอิง

Patty
Heya! I understand this is sort of off-topic however I had to ask. Does managing a well-established blog like yours take a massive amount work? I am completely new to writing a blog but I do write in my journal on a daily basis. I'd like to start a blog so I can share my own experience and feelings online. Please let me know if you have any kind of recommendations or tips for new aspiring bloggers. Thankyou!
 
ลิงค์ที่เกี่ยวข้อง : https://evigetir.com/Ev-Tasima-no-qa
Patty [104.223.223.xxx] เมื่อ 18/09/2023 13:57
6282
อ้างอิง

sheetaldelhi
 
ลิงค์ที่เกี่ยวข้อง : https://sheetaldubay.com/delhi-call-girl/
sheetaldelhi [103.83.144.xxx] เมื่อ 18/09/2023 14:09
6283
อ้างอิง

delhifunclub
 
delhifunclub [103.157.160.xxx] เมื่อ 18/09/2023 14:14
6284
อ้างอิง

Velma
Its like you read my thoughts! You appear to know a lot approximately this, like you wrote the guide in it or something. I think that you just can do with a few p.c. to power the message home a bit, however other than that, this is great blog. A fantastic read. I'll certainly be back.
 
ลิงค์ที่เกี่ยวข้อง : https://www.jack-wolfskin.lv/login/?returnUrl=http%3A%2F%2Fxxxlove.pro
Velma [78.138.127.xxx] เมื่อ 18/09/2023 14:17
6285
อ้างอิง

ladki ko khush kaise kare
क्या आप किसी की तरफ आकर्षित हैं और आप उसे अपना बनाना चाहते हैं और आप यह भी जानना चाहते हैं कि Ladki se Flirt Kaise Kare. वैसे उसे अपने बनाने के लिए थोड़ी छेड़छाड़ और थोड़ी खींचतान जरूरी है। कुछ इस तरह से ही लड़के लड़की से थोड़ा मजाक करके और अपने दिल की बात बयां करके अपनी गर्लफ्रेंड बनाते हैं। ​ladki ko khush kaise kare
 
 
ladki ko khush kaise kare [137.59.221.xxx] เมื่อ 18/09/2023 14:49
6286
อ้างอิง

sheetalgurgaonx

Gurgaon High-Class Call Girls Agency Near Me

The  Call Girls Gurgaon  are not your typical women; They have exceptional beauty and intelligence as a bonus. Select the girl of your choosing to satisfy all of your needs and desires. We provide a variety of call girls, and you can pick the escort girl you prefer from Gurgaon. The selection includes sexy housewives and sensuous young girls. All you have to do to experience intense romantic delights is get in touch with the  Gurgaon Escort Agency . Hire call girls for both in-call and out-of-call work to fill the need left by passionate and personal lifestyles.

Gurgaon is a relatively large metropolis with a variety of distinct suburbs. There are people who want to use escort services all over the place. There used to be a specific location where residents from all over the city could go to seek out their services. But in the modern technological era, our escort services in Gurgaon have improved and been optimized.

Online chats and phone calls can now be used for the full booking process. We now provide Elite Gurgaon Escort Girls right to your door. All you will need to do is wait patiently for our Lovely call girl to arrive and make your life a lot happier once you have chosen which girl to opt for and the payment details have been validated by our Customer service executives.

Gurgaon Hotel Meriton Available 24/7

Our females are all incredibly skilled in the art of making love. Each of our girls clearly has a special technique of enticing a man. You will undoubtedly go crazy with joy the instant you set eyes on her. You will experience a rush when our young  Call Girls in Gurgaon  start touching you when you first enter the room with her.

Although they are free to haggle over the costs, they should be aware that paying what she charges is the best way to acquire what she has to give. Nothing can compare to the feeling of awe you will experience throughout your time with her. In fact, you'll fall head over heels for our girls, and be sure to visit her whenever you get the chance. That is a nice feeling, for sure.

At the Gurgaon escort, we are aware that no one loves to wear the  Call Girl Services Gurgaon  around their neck. Because of this, we take all necessary precautions to protect the privacy of our clients. We attempt to keep things in the personal data with any other Agencies because we have a responsibility to our clients. Your personal information is kept private and is never encouraged to be shared with any other personalities or independent escorts.

 
ลิงค์ที่เกี่ยวข้อง : http://sheetaldubay.com/escort-service-gurgaon/
sheetalgurgaonx [103.83.144.xxx] เมื่อ 18/09/2023 17:45
6287
อ้างอิง

ishikaamumbai

Welcome to the dazzling city of Mumbai, where the allure of escorts adds a touch of luxury and elegance to the vibrant metropolis. In this blog post, we embark on an enchanting journey through the diverse and glamorous world of Mumbai escorts. From the captivating call girls to the enchanting Russian escorts, the city offers a plethora of options for those seeking companionship and pleasure.

Escorts in Mumbai: Beauty, Sophistication, and Charm

Mumbai escorts are renowned for their captivating beauty, sophistication, and magnetic charm. Handpicked for their engaging personalities and alluring presence, these companions bring an element of excitement to every encounter. Whether you seek a romantic date, a stimulating conversation, or an intimate rendezvous, escorts in Mumbai are dedicated to crafting unforgettable experiences tailored to your desires.

Mumbai Call Girls: Intimate Connections and Experiences

Mumbai call girls offer genuine connections and intimate companionship for various occasions. These enchanting companions understand the art of seduction and are adept at fulfilling their clients' unique preferences. From accompanying you to social events to sharing private moments of pleasure, Call girls in mumbai create an ambiance of intimacy that leaves a lasting impression.

Mumbai Escort Service: A Gateway to Unmatched Pleasure

Escort service in Mumbai acts as a gateway to unmatched pleasure and luxury. Reputable agencies and independent escorts ensure professionalism and discretion, making the booking process seamless and confidential. With a wide selection of companions to choose from, Mumbai escort service caters to diverse preferences and desires, ensuring every encounter is personalized and memorable.

Russian Escorts in Mumbai: Exotic Allure and International Intrigue

For those seeking an exotic experience, Russian escorts in Mumbai add an element of international intrigue. With their enchanting beauty, sophistication, and captivating personalities, these companions bring a different cultural perspective and allure to the escort scene. Spending time with Russian escorts promises a unique and unforgettable encounter filled with excitement and sensuality.

Independent Mumbai Escorts: Freedom of Choice and Personalization

Independent escorts in Mumbai offer the freedom of choice and a personalized experience. These companions cater to your preferences and ensure an intimate encounter tailored to your desires. Engaging with independent Mumbai escorts provides a genuine and fulfilling experience, allowing you to explore your fantasies in a comfortable and safe environment.

Mumbai Model Escorts and Celebrity Escorts: Where Glamour Meets Companionship

Mumbai model escorts and Mumbai celebrity escorts redefine glamour and companionship. These enchanting companions exude elegance and sophistication, providing a taste of the city's glamorous lifestyle. Whether you desire a high-profile event companion or a private rendezvous, Mumbai model escorts and celebrity escorts elevate your experience to unparalleled heights of luxury.

Conclusion

Mumbai escorts offer a diverse and glamorous world of companionship and pleasure. From the captivating call girls to the enchanting Russian escorts, the city caters to a wide range of preferences and desires. Whether you seek excitement, intimacy, or luxury, each encounter with Mumbai escorts leaves a lasting impression. Engage with reputable escort services to ensure professionalism, confidentiality, and customer satisfaction, and embark on a journey filled with companionship, pleasure, and unforgettable moments in the dazzling city of Mumbai.

 

andheri escorts services|andheri escorts|andheri call girls|call girl andheri|call girls in andheri|call girls in andheri east|vashi escorts|vashi call girls|vashi escort service|escort services in mira road|mira road escorts services|mira road escorts

|chembur escort service|escort services in chembur|foreign escort service chembur|escort service near chembur|nerul escort service|nerul call girls

|nerul escorts|call girls in nerul|thane escort services|escort service in thane|best escort service in thane|escort service in thane mumbai|escorts services thane|female escort services in thane|navi mumbai escort service|navi mumbai escorts|call girl in navi mumbai|bandra escort service|bandra escorts

|bandra call girls|bandra escort services|escorts service in bandra|escort service in goregaon|escort service in goregaon mumbai|call girl goregaon|kurla escort service|escort service at kurla east|kurla call girls|byculla escorts services|sakinaka escorts service|escort service near sakinaka|call girls in sakinaka|call girl in mumbai sakinaka|sakinaka call girls|escort service in dahisar east|dahisar escorts service|dahisar call girls|call girls from dahisar|ghatkopar escort service|call girl in ghatkopar|ghatkopar call girl sex|mumbai call girl in ghatkopar in cheap rate|escort services worli 

ishikaamumbai [103.138.232.xxx] เมื่อ 18/09/2023 18:59
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :