Kovar has been in use for many decades. Despite its relatively long history, many people outside of engineering fields may never have heard of this valuable alloy. This is an overview of kovar.
The name Kovar is actually trademarked by a Delaware corporation, CRS Holdings, Inc. Kovar was first patented in the U.S. hauv 1936. The alloy itself is made from iron, npib xee, and cobalt.
The uniqueness of Kovar, and thus its importance, is that it has a coefficient of thermal expansion that is remarkably similar to borosilicate glass (hard glass) or ceramic. This alloy’s coefficient of thermal expansion is not an accident. Kovar was, in fact, carefully formulated to meet a specific need.
The challenge with pairing metal to glass is that each has a different coefficient of thermal expansion. Qhov teeb meem yog tias raws li cov iav thiab hlau tau rhaub lossis txias lawv nthuav dav thiab cog lus ntawm tus nqi sib txawv thiab hauv ntau qhov ntau. Yog li, lub hermetic foob ntawm cov hlau thiab iav yuav raug rhuav tshem, lossis cov iav yuav tawg, thaum ob qho ua ke thiab muaj kev hloov pauv ntawm qhov kub thiab txias.
Ib qho nquag, Txhua hnub piv txwv ntawm qhov xav tau ntawm ib qho alloy uas tuaj yeem nyab xeeb ua ke nrog iav yog lub teeb teeb. Ib lub teeb pom kev zoo ua nrog lub hauv paus uas muaj qhov sib txawv ntawm thermal expansion los ntawm iav yuav tawg sai sai vim yog cov cua sov uas lub qhov muag tsim thaum siv. Kovar daws qhov teeb meem no vim tias lub hauv paus alloy thiab iav qij nthuav dav thiab cog lus ntawm ze li tib tus nqi.
Lub teeb qij yog tej zaum qhov piv txwv tshaj plaws ntawm kev siv Kovar, but this alloy is used in many different products. Kovar is also used to manufacture x-ray tubes, microwave tubes, diodes, neeg ua hauj lwm, thiab ntau dua.
Kovar may not be a household name, but this incredible alloy is still used in products in every home.
Eagle Alloys Corporation has been in the metal business for more than 30 Xyoos. We are able to offer solutions to your material needs. Hu rau peb hnub no to learn more about our products or to place your order.
