EP 0218916 B1 19911227 - A PROCESS TO FORM A SULPHIDE CASE AT THE SURFACE OF A METAL PART
Title (en)
A PROCESS TO FORM A SULPHIDE CASE AT THE SURFACE OF A METAL PART
Publication
Application
Priority
CN 85106828 A 19850910
Abstract (en)
[origin: EP0218916A1] The present invention relates to a process and the corresponding equipment, with which a case of sulphide forms at the surface of metal part (5) by heating and gasifying sulphur, the metal part (5) is on the table (4) of cathode in a vacuum reacting chamber (1) of said equipment while a vapourizer (6) is provided in the same vacuum reacting chamber (1), the vapourizer (6) being heated with a low voltage supply (11) and used to hold solid sulphur. Under vacuum condition, solid sulphur will be gasified by heating and the gasified sulphur will be ionized and discharged with glow under the action of a direct electric field at high voltage between the anode (2) and cathode (4), under the glow discharge conditions, the positive sulphur ions will bombard the metal parts (5) which are located on the cathode table (4) and a sulphide case will be formed at the surfaces of parts (5).
IPC 1-7
IPC 8 full level
CPC (source: EP)
C23C 8/38 (2013.01)
Citation (examination)
- Heat Treatment of Metals, Vol. 3, 1983, p. 6-9
- J. of China Textile Engineering Assoc., vol. 4, No. 2, 1983, p. 5-10
- Hubei-Mechanics, vol. 4, 1981, p.10-12
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0218916 A1 19870422; EP 0218916 B1 19911227; CN 85106828 A 19870311; CN 85106828 B 19870909; DE 3683119 D1 19920206; JP S6289858 A 19870424; JP S6357501 B2 19881111
DOCDB simple family (application)
EP 86112510 A 19860910; CN 85106828 A 19850910; DE 3683119 T 19860910; JP 21372286 A 19860910