液冷系统中钎焊异质材料的腐蚀行为.pdf

1、Corrosion Behavior of Brazed Corrosion Behavior of Brazed Heterogeneous Materials in Liquid Heterogeneous Materials in Liquid Cooling SystemsCooling SystemsAsia Vital Components Co.Ltd(AVC)Tunghai UniversityFang-Chou Lin,Director of thermal technology center/Asia Vital Components Co ltd(AVC)Prof.Jen

2、g-Yu Lin,Dep.of Chemical and Materials Engineering/TunghaiUniversityCorrosion Behavior of Brazed Heterogeneous Materials in Liquid Cooling SystemsAs the demand for AI server cooling rapidly grows and applications diversify,the cold plate tubing design is gradually shifting from hard copper tubing or

3、 EPDM hose to stainless corrugated tube.Stainless corrugated tube has a good flexibility for L10 installation as well as a higher structural strength.Heterogeneous brazing combined stainless and copper material has been often in cold plate design.Cold plate with heterogeneous materials brazingcopper

4、 adapter Stainless corrugated tube Stainless adapter brazed on copper cold plateThe WM list is conservative and does not include all materials which may be acceptable for use.Galvanic corrosion behavior on dissimilar metal material combination like copper,stainless-steel and brazing filler draws att

5、ention from cold plate manufacturers as well as AI server customers.Wetted MaterialsMaterials Details Comments Copper CDA110,CDA1020,CDA1220,CDA1100 Brass of 15%zinc Brass used for quick connectors can lead to zinc coming into solution over time.There may be potential for dezincification of brass co

6、nnectors and valves.If brass is used as a wetted material,it is recommended that annual zinc analysis be completed via ICP.Stainless Steel 304L,316L or higher grades preferred Most SS alloys should be acceptable,including 410.Nickel,high nickel alloys Avoid Hastelloy B and other alloys designed for