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摘要:
A kind of composite material, tungsten wire-CVD tungsten was fabricated by winding tungsten wire on the substrate periodically in the CVD process using the homemade CVD device. The density, composition and micro-hardness were tested and analyzed; the crushing strength was calculated according to crushing test; the tensile and bending curves were obtained according to tensile test and three-point bending test. The results show that the dense coating without holes can be obtained when the chemical reaction temperature is controlled at 550 degrees C and the flows of WF6 and H-2 are controlled at 2 g/min and 1 L/min, respectively. Compared with the CVD tungsten samples without wound tungsten wire under the same process conditions, the tungsten wire-CVD tungsten composite materials still possesses high purity and density, the similar micro-hardness, but the crushing strength, the tensile strength and the bending strength are improved greatly.
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来源 :
RARE METAL MATERIALS AND ENGINEERING
ISSN: 1002-185X
年份: 2014
期: 5
卷: 43
页码: 1234-1237
0 . 7 0 0
JCR@2022
ESI学科: MATERIALS SCIENCE;
ESI高被引阀值:256
JCR分区:4
中科院分区:4