초록

An exhaust manifold includes an exhaust conduit having an inner surface, and an aluminide layer disposed on at least a portion of the inner surface of the manifold. The exhaust manifold is made by applying aluminum on an inner surface of the manifold and oxidizing to form the aluminide layer.

대표청구항 ▼

What is claimed is: 1. A method for making an exhaust manifold having an aluminide layer, comprising:forming an exhaust manifold of cast iron, said exhaust manifold having an inner surface;forming an aluminum intermetallic compound layer on and in direct contact with at least a portion of the inner

What is claimed is: 1. A method for making an exhaust manifold having an aluminide layer, comprising:forming an exhaust manifold of cast iron, said exhaust manifold having an inner surface;forming an aluminum intermetallic compound layer on and in direct contact with at least a portion of the inner surface of the exhaust manifold; andafter the aluminum intermetallic compound layer is formed, forming a platinum aluminide layer on and in direct contact with said aluminum intermetallic compound layer.