| 摘要 |
A composite article capable of initially rapid heating and subsequent continuous rapid transfer of heat. The article has a core of material, preferably copper, having a minimum first predetermined value of thermal conductivity and an outer surface portion of metallic material of certain compositions such as aluminum, aluminum-rich alloy, nickel, or nickel-rich alloy. The composite article has oxidation resistance at elevated temperatures equivalent to AISI type 303 stainless steel and has a bulk thermal conductivity not less than a second predetermined value. In one embodiment the article is cup-shaped for defining an auxiliary compartment or pre-chamber for a combustion chamber of an internal combustion engine. The method includes immersing the core in a bath of molten aluminum or aluminum-rich alloy, removing the article, and heating to a temperature of substantially 800 DEG C. |
