High water-resistant member, and valve gear using the same for use in internal combustion engine
Patent 4873150 Issued on October 10, 1989. Estimated Expiration Date: 
October 26, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 26, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3690959 Wear-resistant member for use in an internal combustion engine Patent #: 4583502 InventorsAssigneeApplicationNo. 112493 filed on 10/26/1987US Classes:428/627, Boride, carbide or nitride component123/90.39, Rocker123/90.51, Composition, surface treatment manufacture428/660, Refractory (Group IVB, VB, or VIB) metal-base component428/685Containing more than 10% nonferrous elements (e.g., high alloy, stainless)ExaminersPrimary: Rutledge, L. DewayneAssistant: Wyszomierski, George Attorney, Agent or FirmForeign Patent References
International ClassF01L 001/00Foreign Application Priority Data1986-10-27 JPAbstractA wear-resistant metal member comprises a surface that has a sprayed layer consisting essentially of, by weight, 2 to 10% C, 18 to 60% Cr, 0.3 to 20% V, 25% or less Mo, 25% or less W, 10% or less Nb, 10% or less Ti, 10% or less Zr, 10% or less Hf and the balance being Fe in a proportion of 20% or greater. The sprayed layer has a martensite-phase matrix containing carbide particles, nitride particles or carbonitride particles. In addition, the member of the present invention is produced by the steps of: plasma-spraying the above-described metal in a reduced pressure atmosphere; and quenching the thus-sprayed metal layer from a predetermined temperature to form a materisite phase in that layer. In addition, the sprayed metal layer may be subjected to carburizing, nitriding or carbonitriding to form a carburized, nitrided or carbonitrided layer in the sprayed metal layer. The member of the present invention has a high wear resistance and is used as a sliding portion of a valve gear in an internal combustion engine.Field of SearchCamshaft drive meansComposition, surface treatment manufacture Eight percent or more chromium containing Molybdenum, tungsten or vanadium containing Molybdenum or tungsten containing Titanium, zirconium or hafnium containing Vanadium, niobium or tantalum containing CHROMIUM BASE Chromium containing Boride, carbide or nitride component Refractory (Group IVB, VB, or VIB) metal-base component Containing more than 10% nonferrous elements (e.g., high alloy, stainless) | |
