Title:
WC-BASED HARD ALLOY AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/262420
Kind Code:
A1
Abstract:
The present invention provides a WC-based hard alloy. The molecular formula of the WC-based hard alloy is T-WC-HAE, wherein T is at least one of carbide, oxide or boride, and HAE is a high-entropy alloy; the HAE is selected from at least five of Al, Cu, Nb, Ti, Zr, Ge, Si, V, Ta, Cr, Mn, Ce, Mo, W and Hf elements; the T contains an element B; in the WC-based hard alloy, the content of the HAE is 0.5 wt%-5 wt%, the content of the T is 35 wt% or less, and the balance is WC and inevitable impurities; the content of the B is 0.1 wt%-3 wt%; the melting point of the HAE is 1850°C or less; the atomic ratio of the elements in the HAE is 0.33-1 according to the measurement of an energy dispersive spectrometer. The WC-based hard alloy of a novel alloy system has excellent strength and toughness, relatively high thermal conductivity and thermal stability and high density, and can meet optical-grade surface requirements by means of processing.
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Inventors:
LIU CHAO (CN)
WEN XIAO (CN)
LIU BIN (CN)
FAN CHAOYING (CN)
CAI XIAOKANG (CN)
ZHENG WENQING (CN)
WU SONGYI (CN)
WEN XIAO (CN)
LIU BIN (CN)
FAN CHAOYING (CN)
CAI XIAOKANG (CN)
ZHENG WENQING (CN)
WU SONGYI (CN)
Application Number:
PCT/CN2022/088923
Publication Date:
December 22, 2022
Filing Date:
April 25, 2022
Export Citation:
Assignee:
XIAMEN TUNGSTEN CO LTD (CN)
XIAMEN GOLDEN EGRET SPECIAL ALLOY CO LTD (CN)
XIAMEN GOLDEN EGRET SPECIAL ALLOY CO LTD (CN)
International Classes:
C22C29/08; B22F9/04; B29C33/38; C03B23/00; C03C19/00; C22C1/05; C22C29/02; C22C30/00; C22C30/02; G02B3/00
Foreign References:
| CN113462947A | 2021-10-01 | |||
| CN113430443A | 2021-09-24 | |||
| CN1827817A | 2006-09-06 | |||
| CN108060322A | 2018-05-22 | |||
| CN110964965A | 2020-04-07 | |||
| CN102796933A | 2012-11-28 | |||
| US20190112695A1 | 2019-04-18 | |||
| KR20190135318A | 2019-12-06 | |||
| GB79972014TA | ||||
| GB38512015TA | ||||
| GB338192017TA | ||||
| GB225882008TA | ||||
| GB133031991TA | ||||
| GB150562017TA |
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