Iron-based sprayed coating, cylinder block for internal combustion engine using same, and sliding mechanism for internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B21D-039/00
F02F-001/18
C23C-004/067
C09D-001/00
F02F-003/10
F02F-007/00
F02F-001/20
출원번호
US-0903788
(2014-05-19)
등록번호
US-9828934
(2017-11-28)
우선권정보
JP-2013-143183 (2013-07-09)
국제출원번호
PCT/JP2014/063157
(2014-05-19)
국제공개번호
WO2015/004993
(2015-01-15)
발명자
/ 주소
Hamada, Takahiro
Ikeda, Akihiro
Nakajima, Masaya
Satou, Nobuhiko
출원인 / 주소
NISSAN MOTOR CO., LTD.
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
An iron-based sprayed coating for coating a bore inner surface of a cylinder block for an internal combustion engine. A coating surface contains pits, its pit amount is within a range of 0.01% to 2.1%, and an average roughness Ra of this coating surface is within a range of 0.01 μm to 0.15 μm. The c
An iron-based sprayed coating for coating a bore inner surface of a cylinder block for an internal combustion engine. A coating surface contains pits, its pit amount is within a range of 0.01% to 2.1%, and an average roughness Ra of this coating surface is within a range of 0.01 μm to 0.15 μm. The cylinder block for an internal combustion engine includes a bore having this iron-based sprayed coating on its inner surface, and a cylinder block body having the bore. A sliding mechanism for an internal combustion engine includes this cylinder block for an internal combustion engine and a piston slidable with the bore of this cylinder block. The piston has a piston ring, and the piston ring has a chromium coating, a chromium nitride coating, or a diamond-like carbon coating at a sliding part with the bore.
대표청구항▼
1. An iron-based sprayed coating for coating a bore inner surface of a cylinder block for an internal combustion engine, wherein a surface of the iron-based sprayed coating contains pits,an amount of the pits on the surface is in a range from 0.01% to 0.21%, andan average roughness Ra of the surface
1. An iron-based sprayed coating for coating a bore inner surface of a cylinder block for an internal combustion engine, wherein a surface of the iron-based sprayed coating contains pits,an amount of the pits on the surface is in a range from 0.01% to 0.21%, andan average roughness Ra of the surface is in a range from 0.01 μm to 0.15 μm. 2. The iron-based sprayed coating according to claim 1, further comprising pores, wherein a cross section porosity is in a range from 0.01% to 0.21%. 3. The iron-based sprayed coating according to claim 1, wherein the iron-based sprayed coating has an average hardness in a range from HV280 to HV500. 4. The iron-based sprayed coating according to claim 2, wherein the iron-based sprayed coating has an average hardness in a range from HV280 to HV500. 5. The iron-based sprayed coating according to claim 1, comprising iron as a main component and carbon in an amount of 0.05 mass % to 0.25 mass %. 6. The iron-based sprayed coating according to claim 2, comprising iron as a main component and carbon in an amount of 0.05 mass % to 0.25 mass %. 7. The iron-based sprayed coating according to claim 3, comprising iron as a main component and carbon in an amount of 0.05 mass % to 0.25 mass %. 8. The iron-based sprayed coating according to claim 4, comprising iron as a main component and carbon in an amount of 0.05 mass % to 0.25 mass %. 9. A cylinder block for an internal combustion engine, comprising: a bore having the iron-based sprayed coating according to claim 1 on an inner surface thereof; anda cylinder block body including the bore. 10. The cylinder block for an internal combustion engine according to claim 9, wherein the cylinder block body is made from aluminum alloy or magnesium alloy. 11. A sliding mechanism for an internal combustion engine, comprising: a cylinder block for an internal combustion engine including a bore having the iron-based sprayed coating according to claim 1 on an inner surface thereof and a cylinder block body including the bore; anda piston slidable with the bore of the cylinder block, wherein the piston includes a piston ring, andthe piston ring has a chromium (Cr) coating, a chromium nitride (CrN) coating, or a diamond-like carbon (DLC) coating, on a sliding part configured to slide with the bore. 12. The sliding mechanism for an internal combustion engine according to claim 11, wherein the cylinder block body is made from aluminum alloy or magnesium alloy. 13. The sliding mechanism for an internal combustion engine according to claim 11, wherein the piston has, at a piston skirt part thereof, a resin coating containing a graphite-based or molybdenum-based solid lubricant. 14. The sliding mechanism for an internal combustion engine according to claim 12, wherein the piston has, at a piston skirt part thereof, a resin coating containing a graphite-based or molybdenum-based solid lubricant. 15. A cylinder block for an internal combustion engine, comprising: a bore having the coating according to claim 2 on an inner surface thereof; anda cylinder block body including the bore. 16. A cylinder block for an internal combustion engine, comprising: a bore having the coating according to claim 4 on an inner surface thereof; anda cylinder block body including the bore. 17. A cylinder block for an internal combustion engine, comprising: a bore having the coating according to claim 8 on an inner surface thereof; anda cylinder block body including the bore. 18. The iron-based sprayed coating according to claim 1, wherein the iron-based sprayed coating is formed by a wire method in which iron-based particles overlap each other while being transversely stretched such that the iron-based particles mutually bond together while contracting in a length direction at a time the iron-based sprayed coating is formed. 19. The iron-based sprayed coating according to claim 2, wherein: the pits comprise recesses having an open portion on the surface of the iron-based sprayed coating; andthe pores are closed and embedded within the iron-based sprayed coating.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.