Abstract
Microwave energy has been in use for variety of applications for over 50 years. These applications include communication, food processing, wood drying, rubber vulcanization, medical therapy, polymers, etc. In the last two decades microwave heating has been also applied very effectively and efficiently to heat and sinter ceramic materials. Microwave heating is recognized for its various advantages, such as: time and energy saving, very rapid heating rates, considerably reduced processing cycle time and temperature, fine microstructures and improved mechanical properties, better product performance, etc. The most recent application of microwaves has been in the field of metallic materials for sintering, brazing/joining and melting. Several common steel compositions, pure metals and refractory metals have been sintered in microwaves to nearly full density with improved mechanical properties. Many commercial powder-metal components of various alloy compositions including iron and steel, copper, aluminum, nickel, Mo, Co, Ti, W, Sn, etc., and their alloys have also been sintered in microwaves producing better properties than their conventional counterparts by using a 2.45 GHz multimode microwave system. This work has been further extended to join and braze bulk metal pieces, especially super alloy based turbine blades. Further, in a specially designed microwave cavity, even the bulk metals can be made to couple with the microwave field and melted. The implications of these findings are obvious in the field of powder metal technology.
| Original language | English (US) |
|---|---|
| Title of host publication | Sohn International Symposium |
| Subtitle of host publication | Advanced Processing of Metals and Materials - Proceedings of the International Symposium |
| Pages | 183-192 |
| Number of pages | 10 |
| Volume | 4 |
| State | Published - Dec 1 2006 |
| Event | 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium - San Diego, CA, United States Duration: Aug 27 2006 → Aug 31 2006 |
Other
| Other | 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 8/27/06 → 8/31/06 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Microwave sintering, brazing and melting of metallic materials. / Agrawal, Dinesh Kumar.
Sohn International Symposium: Advanced Processing of Metals and Materials - Proceedings of the International Symposium. Vol. 4 2006. p. 183-192.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Microwave sintering, brazing and melting of metallic materials
AU - Agrawal, Dinesh Kumar
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Microwave energy has been in use for variety of applications for over 50 years. These applications include communication, food processing, wood drying, rubber vulcanization, medical therapy, polymers, etc. In the last two decades microwave heating has been also applied very effectively and efficiently to heat and sinter ceramic materials. Microwave heating is recognized for its various advantages, such as: time and energy saving, very rapid heating rates, considerably reduced processing cycle time and temperature, fine microstructures and improved mechanical properties, better product performance, etc. The most recent application of microwaves has been in the field of metallic materials for sintering, brazing/joining and melting. Several common steel compositions, pure metals and refractory metals have been sintered in microwaves to nearly full density with improved mechanical properties. Many commercial powder-metal components of various alloy compositions including iron and steel, copper, aluminum, nickel, Mo, Co, Ti, W, Sn, etc., and their alloys have also been sintered in microwaves producing better properties than their conventional counterparts by using a 2.45 GHz multimode microwave system. This work has been further extended to join and braze bulk metal pieces, especially super alloy based turbine blades. Further, in a specially designed microwave cavity, even the bulk metals can be made to couple with the microwave field and melted. The implications of these findings are obvious in the field of powder metal technology.
AB - Microwave energy has been in use for variety of applications for over 50 years. These applications include communication, food processing, wood drying, rubber vulcanization, medical therapy, polymers, etc. In the last two decades microwave heating has been also applied very effectively and efficiently to heat and sinter ceramic materials. Microwave heating is recognized for its various advantages, such as: time and energy saving, very rapid heating rates, considerably reduced processing cycle time and temperature, fine microstructures and improved mechanical properties, better product performance, etc. The most recent application of microwaves has been in the field of metallic materials for sintering, brazing/joining and melting. Several common steel compositions, pure metals and refractory metals have been sintered in microwaves to nearly full density with improved mechanical properties. Many commercial powder-metal components of various alloy compositions including iron and steel, copper, aluminum, nickel, Mo, Co, Ti, W, Sn, etc., and their alloys have also been sintered in microwaves producing better properties than their conventional counterparts by using a 2.45 GHz multimode microwave system. This work has been further extended to join and braze bulk metal pieces, especially super alloy based turbine blades. Further, in a specially designed microwave cavity, even the bulk metals can be made to couple with the microwave field and melted. The implications of these findings are obvious in the field of powder metal technology.
UR - http://www.scopus.com/inward/record.url?scp=33846082790&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846082790&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33846082790
SN - 0873396332
SN - 9780873396332
VL - 4
SP - 183
EP - 192
BT - Sohn International Symposium
ER -