-
公开(公告)号：JPH07293614A
公开(公告)日：1995-11-07
申请号：JP9017894
申请日：1994-04-27
Applicant: TOYOTA MOTOR CORP , OSAKA GAS CO LTD
Inventor： USUI HIROKI , TOMOTA TAKASHI , MIURA HIROHISA , SHIMODA KOJI , NAKAGAWA YOSHITERU , KUSANO YOSHIRO
Abstract: PURPOSE:To provide a cast iron-made counterpart material wherein the coefficient of friction is high and stabilized even if a carbon material shoe is used. CONSTITUTION:In brake counterpart materials for performing the brake action by being brought in slide-contact with a carbon material shoe, one out of them is formed by a surface oxide film formed by heating and oxidizing a cast iron- made main body and the main body front surface, and the sliding surface with which the carbon material shoe is to be brought in slide-contact with is formed by the front surface of the surface oxide film. The other one is formed by a cast iron containing nickel of 10 to 50wt.%. The cast iron-made brake counterpart containing substantial amounts of nickel and the brake material counterpart material taking the front surface of the oxide film as the sliding surface have the high coefficient of friction in relation to the carbon material shoe. The reason whey they have the high coefficient of friction is not revealed. However, it is conceivable that the coefficient of friction is high and stabilized by carbon transferred on the sliding surface on the basis of the supposition that transferring of carbon to the sliding surface is observed from the extremely early stages.
-
公开(公告)号：JPH03237299A
公开(公告)日：1991-10-23
申请号：JP3090890
申请日：1990-02-09
Applicant: TOYOTA MOTOR CORP , CERAMIC KOOTO KK
Inventor： TOMOTA TAKASHI , KITAOKA MASAHIRO , HENMI HITOSHI , SONODA MINORU
IPC: F01D11/08 , B32B15/04 , B32B27/00 , B32B27/20 , C09D183/04 , F02B39/00 , F04D29/02 , F04D29/16 , F04D29/44
Abstract: PURPOSE:To obtain a clearance adjusting film layer having good productivity at a low cost, by forming the bed layer of silicone system resin after applying short-blast on a housing, and forming the film layer of a silicone system resin including ceramic balloons and ceramic fibers. CONSTITUTION:Shot blast is applied on a part 6 opposing to the impeller of a compressor housing 5, and then degreasing cleaning and drying are applied thereon. After bed paint made of silicone system resin including color pigment and corrosion preventing pigment is applied thereon, it is dried so as to form a bed layer 7d. Film paint made of silicone system resin including ceramic balloons 7a and ceramic fibers 7b is applied on the bed layer 7d, and after that, it is dried so as to form a film layer 7f. In the clearance adjusting film layer 7f, since cutting resistance by an impeller is smaller in comparison with that of the layer formed by a flame sprayed material, and the layer 7f is formed by brush painting or spray painting, it is thus possible to form the film layer if a low cost, improve its productivity, and reduce unevenness of the film.
-
公开(公告)号：JPH02228462A
公开(公告)日：1990-09-11
申请号：JP5068689
申请日：1989-03-02
Applicant: TOYOTA MOTOR CORP
Inventor： TOMOTA TAKASHI , MIYAMOTO NORITAKA , SHIMODA KENJI
Abstract: PURPOSE:To develop the composite material coated with a wear-resistant metal with high adhesive strength by forming an Al film on the surface of an Al-based composite material which consists of the powder, etc., of SiC dispersed in Al, heating the material to cause interdiffusion and to oxidize the exposed SiC and then coating the material with the wear-resistant metal. CONSTITUTION:The surface of the Al-based composite material formed by dispersing the granular or whisker-like SiC 2 into an Al matrix 1A is instantaneously heated to 300 to 550 deg.C by a high-density energy source, such as plasma or laser, to oxidize the surface of the SiC 2 exposed on the surface to SiO2. The wear resistant metal, such as steel or Fe-Cr alloy, Mo or WC-Co alloy, is formed to 0.05 to 0.2mm thickness thereon by ion plating, etc. An Al film 4 having
-
公开(公告)号：JPH02209460A
公开(公告)日：1990-08-20
申请号：JP3079989
申请日：1989-02-09
Applicant: TOYOTA MOTOR CORP
Inventor： SHIMODA KENJI , TOMOTA TAKASHI
Abstract: PURPOSE:To improve the hardness and wear resistance of a thermally sprayed layer by using, as a spraying gas, a gaseous mixture of air and CO at the time of forming an arc-sprayed layer of Fe-C material on the sliding surface of a base material. CONSTITUTION:At the time of producing a wear resistant sliding member on which a wear resistant thermally sprayed layer is formed by means of arc spraying of Fe-C material, a gas prepared by mixing CO gas into air is used as a spraying gas for arc spraying, By this method, the oxidizing reaction of C in the Fe-C material is inhibited by the powerful reducing action of the CO gas and the degree of decarburization is reduced, and sufficient amounts of C can be secured in the thermally sprayed layer. As a result, sufficient hardening effect can be obtained, and a high-hardness deposited layer can be formed.
-
公开(公告)号：JPH02136553A
公开(公告)日：1990-05-25
申请号：JP28657388
申请日：1988-11-12
Applicant: TOYOTA MOTOR CORP
Inventor： MIYAMOTO NORITAKA , TOMOTA TAKASHI
Abstract: PURPOSE:To prevent the generation of cracks and exfoliation on a metallization film by forming the ceramic metallization film for shielding heat in a cylinder head in a specific range and installing a means for exposing the casted iron of a cylinder head basic member within a specific range. CONSTITUTION:In a cylinder head 1 which is made of casted iron and used for a Diesel engine equipped with a subcombusion chamber, a ceramic metallization film 5 for shielding heat is formed in a region including a part between a suction hole 2, exhaust hole 3, and a chamber hole 4. In this case, the metallization film 5 is formed to a position separated by a specific distance of 1-5mm for the edge of the chamber hole 4 from the side of a between-valve part. In a part 11 which ranges to the edge of the chamber hole 4 from the above- described position, a basic material forming the cylinder head 1 is exposed. Further, at the edge part on the chamber hole 4 side of the metallization film 5, the surface is formed substantially levelled for the surface of the exposed part of the chamber hole peripheral edge part 11 of the cylinder head 1.
-
Patent Agency Ranking
公开(公告)号：JPH01172554A
公开(公告)日：1989-07-07
申请号：JP32860887
申请日：1987-12-25
Applicant: TOYOTA MOTOR CORP , AWAMURA METAL IND CO LTD
Inventor： MIYAMOTO NORITAKA , NAKAGAWA MASAHIRO , TOMOTA TAKASHI , KAMIYAMA SUMIO , ASHIDA KIYOMI , YASUOKA JUNICHI
Abstract: PURPOSE:To produce a flame spraying material for forming cermet flame spraying layer having excellent durability by forming metal coating layer having one or more kinds of Ni, Cr and Co around ceramic grain composing of partially stabilized zirconia. CONSTITUTION:The flame spraying material is produced by forming the metal coating layer 21 composing of metal selected from Ni, Cr and Co or alloy at these two or more kinds around the ceramic grain 20 composing of partially stabilized zirconia (ZrO2.Y2O3, etc.,). Then, the size of the ceramic grain 20 is made in the range of 10-125mu and the metal coating layer 21 is made in the range of 10-50wt.%. At the time of flame spraying this flame spraying material on the base material 24, the coating layer 21 is melted and the ceramic grain 20 is flame-sprayed under non-melting or semi-melting condition, and the obtd. cermet layer 23 is covered with the metal layer 21A around the ceramic grain 20 and made to firmly combined condition. By this method, the cermet layer 23 having sufficient durability to the repeating of heating and cooling.
-
公开(公告)号：JPS63274751A
公开(公告)日：1988-11-11
申请号：JP10844187
申请日：1987-05-01
Applicant: TOYOTA MOTOR CORP
Inventor： MIYAMOTO NORITAKA , TOMOTA TAKASHI
Abstract: PURPOSE:To improve the durability of the title member in a high-temp. corrosive atmosphere and to provide excellent heat insulating property and heat resistance by thermally spraying a first layer of zirconia and a second layer of alumina, titania, etc. through a thermally sprayed substrate layer having good adhesion to ceramics on a metallic base material. CONSTITUTION:The thermally sprayed substrate layer 2 of an Ni-based alloy, etc., having good adhesion to ceramics is formed on the surface of the metallic base material 1. The first ceramic thermally sprayed layer 3 consisting of zirconia is then formed thereon, and the second ceramic thermally sprayed layer 4 consisting of >=1 kind among alumina, titania, or spinel is formed thereon. Alternatively, a grated thermally sprayed layer 5 consisting of >=1 kind among zirconia, alumina, titania, and spinel and wherein the zirconia content is decreased from the first thermally sprayed layer 3 side to the surface side is formed on the first thermally sprayed layer 3, and then the above-mentioned second thermally sprayed layer 4 is formed. By this method, the infiltration of the external air is prevented, and the release of the ceramic thermally sprayed layer due to the oxidation and corrosion of the thermally sprayed substrate layer 2 can be prevented.
-
公开(公告)号：JPS63157851A
公开(公告)日：1988-06-30
申请号：JP30578086
申请日：1986-12-22
Applicant: TOYOTA MOTOR CORP
Inventor： TOMOTA TAKASHI , MIYAMOTO NORITAKA
IPC: C23C4/06
Abstract: PURPOSE:To provide a titled thermal-sprayed member which is optimum as a member to be used in par part where heating and cooling are repeated in a high-temp. corrosive atmosphere, by laminating and forming an underlying thermal-sprayed layer on the surface of a base material consisting of a metal and intermediate layer consisting of carbide or nitride between the base material and oxide ceramic thermal-sprayed layer on the outermost surface thereof. CONSTITUTION:The underlying thermal-sprayed layer 2 consisting of an Ni-base alloy, etc., is formed on the surface of the base material 1 consisting of an Al alloy, etc., to form the above-mentioned ceramic thermal-sprayed member. The intermediate layer 5 consisting of the carbide (e.g.: ZrC, etc.) or nitride (e.g.: ZrN, etc.) is provided between said layer 2 and the ceramic thermal-sprayed layer 3 consisting of the oxide ceramics (e.g.: ZrO2, etc.) on the outermost surface side. The carbide or nitride of said intermediate layer 5 has generally an easy tendency to a change to the oxide when exposed to the high-temp. corrosive atmosphere. The oxide layer 6 of the figure, therefore, has the porous structure of high porosity when subjected to the repetition of heating and cooling. Said layer is provided with the excellent heat resistance and heat insulating characteristic and exhibits the functions similar to the functions of the upper thermal-sprayed layer 3.
-
公开(公告)号：JPS6293360A
公开(公告)日：1987-04-28
申请号：JP23196685
申请日：1985-10-17
Applicant: TOYOTA MOTOR CORP
Inventor： MIYAKE JOJI , TOMOTA TAKASHI , MIYAMOTO NORITAKA
Abstract: PURPOSE:To form a thermally sprayed light weight layer superior in adhesiveness, heat insulating property, by forming composite layer composed of base metal and reinforcing fiber material, melting and removing a part of the metal, then forming thermally sprayed ceramic layer. CONSTITUTION:Fibers 1 made of Al2O3, SiC, ZrO2, metal, etc., are arranged in one direction in metal mold for high pressure casting, molten light metal such as Al and Al alloy is poured therein to cast at a high pressure, a square shaped or cylindrical base metal 4 having the composite layer 3 composed of the material 1 and a base light metal 2 is manufactured. Surface of the layer 3 is dipped in 10% NaOH soln. to dissolve and remove light metal at thin layer part. Next, oxide is removed by neutralization with acid liquid, then Ni-Cr-Al alloy is plasma sprayed as an under coat layer 5A on the surface where the materials 1 protrudedly remain, further a ceramic layer 5B such as Al2O3, SiC is plasma sprayed thereon. Thermally sprayed layer superior in sticking force of the metal 4 with the layers 5A and 5B is formed.
-
公开(公告)号：JPS61281863A
公开(公告)日：1986-12-12
申请号：JP12343885
申请日：1985-06-06
Applicant: TOYOTA MOTOR CORP
Inventor： MIYAMOTO NORITAKA , MIYAKE JOJI , TOMOTA TAKASHI
Abstract: PURPOSE:To prevent the stripping or falling of a thermally sprayed ceramic layer formed on a part heated to a high temp. by making the ceramic layer discontinuous so as to relieve shearing stress produced on the interface between the ceramic layer and the base material of the part. CONSTITUTION:A ceramic material having low heat conductivity is thermally sprayed on the part of a piston 1 heated to a high temp. such as a portion of demarticating combustion chamber to form a thermally sprayed ceramic layer 3. At this time, the layer 3 is made discontinuous 5 on the surface of the base material 1a of the part. Shearing stress produced on the interface between the base material 1a and the thermally sprayed ceramic layer 3 which improves the heat resistance and heat insulation of the material 1a is relieved, so the stripping or falling of the layer 3 is prevented.
-
-
-
-
-
-
-
-
-
Search Results
82
records
(took 0.016 seconds)
