摘要:
In a cast-iron disc brake rotor (1), each of an outer sliding surface (2a) and an inner sliding surface (3a) is covered with a phosphate coating (8) by electrolysis of a phosphate coating solution containing therein phosphate ions, zinc ions and nitrate ions. This makes it possible to attain dramatically improved rust preventive performance for the sliding surfaces (2a) and (3a). The phosphate coating (8) has a thickness of 1 to 10 &mgr;m, a mass of 4 to 35 g/m2 and a grain size of less than 50 &mgr;m. Preferably, the thickness of the phosphate coating (8) is adjusted to 2 to 8 &mgr;m.
摘要翻译:在铸铁盘式制动器转子(1)中,通过电解含有磷酸盐离子的磷酸盐涂布溶液,用磷酸盐涂层(8)覆盖外滑动面(2a)和内滑动面(3a) 锌离子和硝酸根离子。 这使得可以显着地提高滑动表面(2a)和(3a)的防锈性能。 磷酸盐涂层(8)的厚度为1〜10μm,质量为4〜35g / m 2,粒径小于50μm。 优选地,将磷酸盐涂层(8)的厚度调节至2至8μm。
摘要:
This invention provides a metal material with a bismuth coating being enables the subsequent coating to be accomplished at a high throwing power, and has excellent corrosion resistance, coating adhesion, and, being able to be produced with reduced damage to the environment, the metal material having a surface and a bismuth-containing layer deposited on at least a part of the surface of the metal material, wherein a percentage of bismuth atoms in number of atoms in the surface layer of the metal material with a bismuth coating is at least 10%.
摘要:
A metal surface treatment liquid for use in forming a composite coating film containing a Bi element and a Group 4 element on a metal base. The metal surface treatment liquid is a fluorine-free aqueous treatment liquid containing (A) a Bi element source, (B) a multimer of at least one Group 4 element selected from the group consisting of Zr, Ti and Hf elements, and (C) one or more aminopolycarboxylic acids or a salt thereof.
摘要:
The present invention provides a chemical conversion solution and the surface treating method for realizing high corrosion resistance and high coating adhesion of the metal surface, as well as high throwing power during electrodeposition, and generating no sludge.A chemical conversion solution comprising (A) at least one compound selected from water-soluble germanium compound, water-soluble tin compound, and water-soluble copper compound, (B) at least one compound selected from water-soluble titanium compound and water-soluble zirconium compound, (C) at least one water-soluble nitrate compound, (D) at least one compound selected from water-soluble aluminum compound and water-soluble magnesium compound, (E) at least one water-soluble zinc compound, and (F) at least one fluorine compound, and, the coating process for the metal structure.
摘要:
Disclosed is a surface treatment liquid containing no chromium compound, which is capable of imparting a zinc-based material with adequate corrosion resistance without coating, namely adequate bare corrosion resistance. Specifically disclosed is a surface treatment liquid for zinc-based metal materials, which contains the following component (A) and component (B): (A) at least one metal element selected from the group consisting of Ti, Zr and Hf; and (B) at least one compound selected from the group consisting of allylamino compounds, imino compounds, amino polysaccharides, amino-modified phenols and derivatives of them. The total concentration of the metal elements of the component (A) is 500-2000 mg/L, and the total concentration of the compounds of the component (B) is 300-3000 mg/L.
摘要:
A metallic material is provided that is superior to an iron-based metallic material in all of adhesion, heat resistance, electrical conductivity, and corrosion resistance, and a method of manufacturing the metallic material is also provided. A metallic material is provided that includes an iron-based metallic material and an oxide layer formed on the surface of the iron-based metallic material. The oxide layer includes Fe and at least one kind of metal (A) selected from a group consisting of Zr, Ti, and Hf. There is also provided a method of manufacturing the metallic material.
摘要:
A composition for metal surface treatment capable of forming films and imparting excellent corrosion resistance in relation to metallic materials, in particular, metal formations having complex shapes through a single dipping step. A composition for metal surface treatment contains 5 to 30% by weight of a nonionic and/or cationic water-based resin, 100 to 1,000 ppm of trivalent Bi ions and an aminopolycarboxylic acid at 0.5 to 10 times in molar concentration based on the Bi ions.
摘要:
A metallic material is provided that is superior to an iron-based metallic material in all of adhesion, heat resistance, electrical conductivity, and corrosion resistance, and a method of manufacturing the metallic material is also provided. A metallic material is provided that includes an iron-based metallic material and an oxide layer formed on the surface of the iron-based metallic material. The oxide layer includes Fe and at least one kind of metal (A) selected from a group consisting of Zr, Ti, and Hf. There is also provided a method of manufacturing the metallic material.
摘要:
Disclosed is a surface treatment liquid containing no chromium compound, which is capable of imparting a zinc-based material with adequate corrosion resistance without coating, namely adequate bare corrosion resistance. Specifically disclosed is a surface treatment liquid for zinc-based metal materials, which contains the following component (A) and component (B): (A) at least one metal element selected from the group consisting of Ti, Zr and Hf; and (B) at least one compound selected from the group consisting of allylamino compounds, imino compounds, amino polysaccharides, amino-modified phenols and derivatives of them. The total concentration of the metal elements of the component (A) is 500-2000 mg/L, and the total concentration of the compounds of the component (B) is 300-3000 mg/L.
摘要:
A composite plated metal material having a composite coating layer with excellent adhesion and mechanical properties is produced by (1) displace deposition-plating a metal I base material with a metal II having a nobler oxidation-eduction potential than that of metal I and (2) dope-modifying the resultant metal II coating layer with a metal III-containing deposit in which metal III is different from metal II and exhibits a nobler oxidation-reduction potential than that of metal I, by using a displace deposition-plating aqueous solution containing metal III-containing compound ions.