Fuel cell separator material, fuel cell separator using same, and fuel cell stack
First Claim
1. A fuel cell separator material, comprising an alloy layer containing Au and a first component containing at least one metal selected from a group consisting of Cr and Mo formed on a Ti base;
- and an intermediate layer containing Ti, O, the first component, and less than 20 mass % of Au arranged between the alloy layer and the Ti base;
wherein the intermediate layer exists as a layer having a thickness of 1 nm or more containing 10 mass % or more of Ti and O, respectively, and 20 mass % or more of the first component, wherein the concentration of the first component of the intermediate layer is decreased toward the Ti base in the thickness direction and the concentration of Ti of the intermediate layer is increased toward the Ti base in the thickness direction;
wherein the alloy layer has a region having a thickness of 1 nm or more from the uppermost surface toward the lower layer and containing 50 mass % or more of Au, or a region having a thickness of 3 nm or more from the uppermost surface toward the lower layer and containing Au in the range from 10 mass % or more to less than 50 mass %; and
wherein a metal layer comprising the first component and having a thickness of 3 nm or less is formed between the alloy layer and the intermediate layer.
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Accused Products
Abstract
A fuel cell separator material, comprising an alloy layer 6 containing Au and a first component containing Al, Cr, Fe, Co, Ni, Cu, Mo, Sn or Bi, or an Au single layer 8 formed on a Ti base 2; an intermediate layer 2a containing Ti, O, the first component, and less than 20 mass % of Au arranged between the alloy layer or the Au single layer and the Ti base; wherein the alloy layer or the Au single layer has a region having a thickness of 1 nm or more from the uppermost to the lower layer and containing 50 mass % or more of Au, or a region having a thickness of 3 nm or more from the uppermost to the lower layer and containing Au in the range from 10-50 mass %, or the thickness of the Au single layer is 1 nm or more.
12 Citations
11 Claims
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1. A fuel cell separator material, comprising an alloy layer containing Au and a first component containing at least one metal selected from a group consisting of Cr and Mo formed on a Ti base;
- and an intermediate layer containing Ti, O, the first component, and less than 20 mass % of Au arranged between the alloy layer and the Ti base;
wherein the intermediate layer exists as a layer having a thickness of 1 nm or more containing 10 mass % or more of Ti and O, respectively, and 20 mass % or more of the first component, wherein the concentration of the first component of the intermediate layer is decreased toward the Ti base in the thickness direction and the concentration of Ti of the intermediate layer is increased toward the Ti base in the thickness direction;
wherein the alloy layer has a region having a thickness of 1 nm or more from the uppermost surface toward the lower layer and containing 50 mass % or more of Au, or a region having a thickness of 3 nm or more from the uppermost surface toward the lower layer and containing Au in the range from 10 mass % or more to less than 50 mass %; and
wherein a metal layer comprising the first component and having a thickness of 3 nm or less is formed between the alloy layer and the intermediate layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- and an intermediate layer containing Ti, O, the first component, and less than 20 mass % of Au arranged between the alloy layer and the Ti base;
Specification