สถิติ
เปิดเมื่อ28/01/2015
อัพเดท19/06/2024
ผู้เข้าชม2092975
แสดงหน้า2585597
ปฎิทิน
October 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 686296 | ตอบ 8347
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 :
8266
อ้างอิง

xzcxzc
You make so many great points here that I read your article a couple of times. Your views are in accordance with my own for the most part. This is great content for your readers

안전놀이터
 
xzcxzc [141.101.68.xxx] เมื่อ 8/09/2024 20:44
8267
อ้างอิง

xzcxzc
You make so many great points here that I read your article a couple of times. Your views are in accordance with my own for the most part. This is great content for your readers
안전놀이터
 
xzcxzc [141.101.68.xxx] เมื่อ 8/09/2024 20:45
8268
อ้างอิง

good data
good data  i Would like to congratulate your webmaster for building a site that could also inspire those people like me. I am looking for a website that would look so professional but friendly user for the people who are just new to these techy world. Kudos to you and keep it up.

 
good data [141.101.68.xxx] เมื่อ 8/09/2024 21:12
8269
อ้างอิง

vcxv
what i do not comprehended couldYou’re very a whole lot appreciated than you may be at this moment
get more info
 
vcxv [172.71.134.xxx] เมื่อ 8/09/2024 21:13
8270
อ้างอิง

xzcvxz
We and our whole young Gurgaon Escingly. We know extremely well what makes men crazy. We never let her away doing all the little compelling variables to give benefits to Gurgaon Escorts.

spotterdayinfraero
 
xzcvxz [141.101.69.xxx] เมื่อ 8/09/2024 21:18
8271
อ้างอิง

View data
I wish more authors of this type of content would take the time you did to research and write so well. I am very impressed with your vision and insight.

View data
 
View data [141.101.69.xxx] เมื่อ 8/09/2024 21:24
8272
อ้างอิง

good contents
Thank you for any other informative site. The place else could I am getting that kind of information written in such a perfect approach? I have a mission that I'm just now running on, and I have been on the look out for such info

good contents
 
good contents [141.101.69.xxx] เมื่อ 8/09/2024 21:44
8273
อ้างอิง

jennykohli

Seeking call girl services in India? You've found the right page. It will now take you into the world of jennykohli call girl services and show you lovely call girls. How are you? You can count on our service.

We provide our customers with a wonderful experience. Which woman would you want to live with? You can have a great night with your girlfriend without any problems if you choose a beautiful call girl from our escort girl services. They will make you and your girlfriend feel just the way you want them to. Are. Exotic erotic call girls and hotel rooms are some of the things that our girls do best. The girls here are very smart and know how to make the customer happy.

We provide services that meet your wants. We have set up more than 300+ VIP Call Girls who are ready to serve you 24 hours a day based on your needs because everyone has different needs. In order to prevent any issues for our clients, we strive to provide the best and most reliable call girl service.

You already know that you need a pretty girl, and the only place the independent call girl service can find one is in your city. Our female call girl services are available at reasonable prices, and we provide the best profiles and free hotel and home delivery. Our call girls will keep your body from drying out and your lust taken care of.

When you're in lust, you need a partner but not everything else. You should try our Independent Call Girls Mobile Number right away because the world needs a companion who can quench the lust. Have a good time at night with hot, independent women. A process that is easy, safe, and private. You can quickly find and hire great call girls.

Independent call girls provide services when and how?

If you want to feel comfortable and at ease, they can be your companion at any time. There is a group of trained call girls working there who are very good at what they do. There are call girls who can provide Hot Call Girls Near Me to people who are looking for company. People can hire call girls at any time, day or night.

Our independent call girls are not like the girls that work for other agencies. The call girls we have are very nice and speak good English. They are nice and know how to make customers happy, so book your erotic call girls now or never. The goal is for everyone to be happy and satisfied..

There are a lot of call girl service that can make you feel loved. Our girls love you and want to be with you. They treat you like a worker instead of a customer. With call girls, you and your partner will definitely feel like you're in love. They will give you what you need if you tell them what you want.

Some people are lucky to have a lot of partners, and that meets all of their wants. Sexy Call Girls Whatsapp Number is glad you found its page. The successful and elite class of guys in a free society can choose our call girls without hesitation.

The top female call girls provide fantastic chances for genuine friendship moments that are crucial to the meeting's success. Our sexy call girls offer the creamy service of call girls if you're looking for high-end call girl services. You can experience the flavor of a company that will provide you with dependable happiness and security when you use the service of call girls.

Beautiful call girls will give you the utmost pleasure.

You need to join our service if you want to hire the most beautiful and exciting call girl. Our Desi India Call Girls and ability to match you with the right call girl profile are what make us stand out. When you use our services, you're probably giving in to your deepest wishes. We have girls that are much better when you give them some love. So that you can have the most fun possible, we promise to provide you with 100% happiness.

People who want to celebrate neighborhood events can use our call girl service whatsapp number at any time. It is our goal to always provide high-quality services at a price that doesn't break the bank. When it comes to quality and commitment, we are the best. Any 5-star hotel will let you book our services.

Visit the Areas For Getting Our Erotic Service:

Nariman Point Call Girl ! Santacruz Call Girl ! Thane Call Girl ! Colaba Call Girl ! Call Girl in Marine Lines ! Call Girl in Khar ! Call Girl in Nerul ! Call Girl in Ghatkopar ! Call Girl in Bhiwandi ! Powai Call Girls Service ! Navi Mumbai Call Girls Service ! Goregaon Call Girls Service ! Chembur Call Girls Service ! Bandra Call Girls Service ! Call Girl Andheri ! Call Girl Borivali ! Call Girl Worli ! Call Girl Vashi ! Call Girl Mira Road ! Juhu Call Girls ! Fort Call Girls ! Churchgate Call Girls ! Mulund Call Girls ! Pedder Road Call Girls ! Call Girls in Marine Drive ! Call Girls in Malabar Hills ! Call Girls in Lonavala ! Call Girls in Delhi ! Call Girls in Jogeshwari ! Kalyan Call Girl Services ! Aerocity Call Girl Services ! Agra Call Girl Services ! Ahmedabad Call Girl Services ! Amritsar Call Girl Services ! Call Girls Bangalore ! Call Girls Bhopal ! Call Girls Chandigarh ! Call Girls Chennai ! Call Girls Coimbatore ! Dehradun Call Girl ! Dwarka Call Girl ! Nainital Call Girl ! Ghaziabad Call Girl ! Goa Call Girl ! Call Girl in Gurgaon ! Call Girl in Guwahati ! Call Girl in Haridwar ! Call Girl in Hyderabad ! Call Girl in Indore ! Jalandhar Call Girls Service ! Jodhpur Call Girls Service ! Kanpur Call Girls Service ! Karnal Call Girls Service ! Kochi Call Girls Service ! Call Girl Kolkata ! Call Girl Kota ! Call Girl Lucknow ! Call Girl Ludhiana ! Call Girl Manali ! Mohali Call Girls ! Mussoorie Call Girls ! Nagpur Call Girls ! Mumbai Call Girls ! Noida Call Girls ! Call Girls in Panchkula ! Call Girls in Pune ! Call Girls in Rajkot ! Call Girls in Rishikesh ! Call Girls in Shimla ! Surat Call Girl Services ! Udaipur Call Girl Services ! Varanasi Call Girl Services ! Vijayawada Call Girl Services ! Zirakpur Call Girl Services

 
jennykohli [103.125.128.xxx] เมื่อ 9/09/2024 14:12
8274
อ้างอิง

Shriram Serenity
 Shriram Serenity is a premium luxury residential apartment to fulfill your desires for a luxurious and comfortable lifestyle. Situated in the heart of Bangalore's vibrant Yelahanka neighborhood, Shriram Serenity offers a perfect balance between convenience and calmness. The project is located in the primary locality of Rajanukunte, Yelahanka, Bangalore. Shriram Serenity Brochure has all the necessary details related to the project specifications, Master Plan & Floor Plan. All these will be designed and planned by the best architects from the industry to give a better living experience inside the community. The pricing is competitive, ensuring that residents get the best of both worlds – a modern living space in a prime location at a reasonable cost. Offering 2 and 3 Bedroom apartments, Shriram Serenity caters to various family sizes and lifestyle preferences.
 
ลิงค์ที่เกี่ยวข้อง : https://www.shriramserenity.co/
Shriram Serenity [172.68.147.xxx] เมื่อ 9/09/2024 15:27
8275
อ้างอิง

Shriram Serenity
 Shriram Serenity is a premium luxury residential apartment to fulfill your desires for a luxurious and comfortable lifestyle. Situated in the heart of Bangalore's vibrant Yelahanka neighborhood, Shriram Serenity offers a perfect balance between convenience and calmness. The project is located in the primary locality of Rajanukunte, Yelahanka, Bangalore. Shriram Serenity Brochure has all the necessary details related to the project specifications, Master Plan & Floor Plan. All these will be designed and planned by the best architects from the industry to give a better living experience inside the community. The pricing is competitive, ensuring that residents get the best of both worlds – a modern living space in a prime location at a reasonable cost. Offering 2 and 3 Bedroom apartments, Shriram Serenity caters to various family sizes and lifestyle preferences.
 
ลิงค์ที่เกี่ยวข้อง : https://www.shriramserenity.co/
Shriram Serenity [172.68.147.xxx] เมื่อ 9/09/2024 15:27
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :