公开(公告)号：US20200232376A1

公开(公告)日：2020-07-23

申请号：US16250352

申请日：2019-01-17

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Guangchun QUAN

IPC: F01N13/16 ,  F01N13/08 ,  F01N13/18 ,  C23C10/04 ,  C23C10/32 ,  B32B15/01 ,  C22C38/18 ,  F01N3/021 ,  F01N3/24

Abstract: An exhaust component for a motor vehicle with improved corrosion resistance, including an internal volume, an inlet for receiving exhaust gas, and an outlet for expelling exhaust gas. The exhaust component includes at least one wall that is made of a diffusion surface alloyed metal sheet. The diffusion surface alloyed metal sheet comprises a secondary metal that is formed to a primary metal substrate by diffusion. The primary metal substrate of the diffusion surface alloyed metal sheet is a stainless steel containing at least 10 percent chromium. The secondary metal of the diffusion surface alloyed metal sheet is a metal alloy containing 20 to 35 percent chromium. As a result, the secondary metal of the diffusion surface alloyed metal sheet provides improved corrosion resistance to salt spray and urea.

公开(公告)号：US20200232378A1

公开(公告)日：2020-07-23

申请号：US16250419

申请日：2019-01-17

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Guangchun QUAN

IPC: F01N13/16 ,  F01N13/08 ,  F01N13/18 ,  C23C10/04 ,  C23C10/32 ,  B32B15/01 ,  C22C38/18

Abstract: An exhaust component for a motor vehicle with improved corrosion resistance, including an internal volume, an inlet for receiving exhaust gas, and an outlet for expelling exhaust gas. The exhaust component includes at least one wall that is made of a diffusion surface alloyed metal sheet. The diffusion surface alloyed metal sheet comprises a secondary metal that is formed to a primary metal substrate by diffusion. A weld bead is applied to at least one of the edges of the diffusion surface alloyed metal sheet for edge protection or to join the edge of the diffusion surface alloyed metal sheet to another diffusion surface alloyed metal sheet. The weld bead includes a high chromium content filler metal to protect the weld bead and the primary metal substrate at the weld joint from corrosion.

公开(公告)号：US20200232377A1

公开(公告)日：2020-07-23

申请号：US16250388

申请日：2019-01-17

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Guangchun QUAN ,  Michael GOLIN

IPC: F01N13/16 ,  F01N13/08 ,  F01N13/18 ,  C23C10/04 ,  C23C10/32 ,  C22C38/18 ,  B32B15/01 ,  F01N3/24

Abstract: An exhaust component for a motor vehicle with improved corrosion resistance, including a housing with outer walls that define an internal volume and one or more inner walls that divide the internal volume into an exhaust chamber and an interior chamber. The interior chamber is isolated from the exhaust chamber and the external environment. At least part of one outer wall or one inner wall is made of a diffusion surface alloyed metal sheet. The diffusion surface alloyed metal sheet comprises a secondary metal that is formed to a primary metal substrate by diffusion. The diffusion surface alloyed metal sheet includes edges that are oriented toward and exposed to the interior chamber. As a result, the primary metal substrate at the edges of the diffusion surface alloyed metal sheet is protected from exposure to corrosives such as salt spray in the external environment and urea in the exhaust chamber respectively.