A carbon body is provided with a converted porous layer by etching and reacting with gaseous boron oxide. This produces a porous boron carbide coating. A vitreous coating is then produced on the boron carbide which at least partially fills the pores. The vitreous coating contains compounds from silicon nitride, silicon oxynitride and a mixture of these.
申请公布号
DE3913237(C1)
申请公布日期
1995.12.21
申请号
DE19893913237
申请日期
1989.04.21
申请人
AIR PRODUCTS AND CHEMICALS, INC., TREXLERTOWN, PA., US
发明人
HOLZL, ROBERT ALFRED, LACANADA FLINTRIDGE, CALIF., US;MAGNOTTA, VINCENT LOUIS, WESCOSVILLE, PA., US;DYER, PAUL NIGEL, ALLENTOWN, PA., US;WITHERS, HOWARD P., FLEETWOOD, PA., US