Hyundai Motor Company

Kia Motors Corporation

Heesung Material Ltd.

Korea Autoglass Corporation

Hyun Dal Park

Jae Young Lee

Jae Woo Lee

Yoon Cheol Kim

In Woong Lyo

Woong Pyo Hong

Bokyung Kim

Jai Min Han

Jiyoun Seo

Kwang Hoon Choi

Tae Seung Lee

Chi Seung Lee

Seung Kyu Kim

Jungyeon Park

Jae Min Han

Hae Won Jeong

Joo Dong Lee

Hyun Chae Jung

Hong Nho Joo

Ho June Yoon

Min Ho Bak

Sun Myung Lee

The method for coating a separator for a fuel cell according to one form of the present disclosure includes the steps of: vaporizing a metal nitride precursor to obtain a precursor gas; introducing a metal nitride coating layer-forming gas containing the precursor gas and a reactive gas to a reaction chamber; applying a voltage to the reaction chamber so that the precursor gas and reactive gas may be converted into a plasma state, thereby forming a metal nitride coating layer on a substrate; introducing a carbon layer-forming gas containing a carbonaceous gas to the reaction chamber; and applying a voltage to the reaction chamber so that the carbonaceous gas may be converted into a plasma state, thereby forming a carbon coating layer on the metal nitride coating layer.

Coating method of separator for fuel cell and separator for fuel cell

The present invention provides a lead-free solder composition for glass. The lead-free solder composition for glass includes indium, zinc, and tin. The indium (In) ranges from about 30.0 wt % to about 60 wt %. The zinc (Zn) ranges from about 0.01 wt % to about 11.0 wt %. The tin (Sn) is included as a remaining component.

Lead-free solder composition for glass

A method for producing a brake disc comprising a coupling part having a centered through-hole, a friction part on the periphery of the coupling part, and a wall part connecting the coupling part and the friction part, including: producing a mold in which the coupling part, the wall part, and the friction part are integrally formed, wherein a gap prevents molten metal from overflowing between the wall part and the coupling part, interface is formed on the periphery of the coupling part, an overflow is provided outside the wall part opposite the gap; a first injection process of injecting a first material to form the friction part; and a second injection process of injecting a second material to form the coupling part, a mold for producing the brake disc, and the brake disc.

Method for producing brake disc, mold for producing brake disc, and brake disc

Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented.

Plasma nitriding surface treatment method for gray cast iron part

Growing community of inventors

Gyeonggi-do, South Korea

Hyun Dal Park