Glass composition, structure, and apparatus using the same
AssigneeHitachi, Ltd.
InventorsHiroki Yamamoto, Takashi Naito, Takashi Namekawa, Ken Takahashi, Noriyuki Kumasaka, Kenkichi Inada
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AssigneeHitachi, Ltd.
InventorsHiroki Yamamoto, Takashi Naito, Takashi Namekawa, Ken Takahashi, Noriyuki Kumasaka, Kenkichi Inada
Estimating the term…
Provided are a glass such as a sealing glass which contains a rare earth element and crystalline particles, a structure made by sealing with said sealing glass, a magnetic head made by bonding using said sealing glass, and a magnetic recording and reproducing apparatus on which said magnetic heads are mounted. According to the glass of the present invention, magnetic heads, and other structures can be bonded at low temperatures and a high bond strength can be attained, and thus, magnetic heads having high-speed sliding properties and magnetic recording and reproducing apparatuses of high reliability can be obtained. The glass can be also used for heat resistant parts such as a pannel glass for a cathode-ray tube and the like.
A borosilicate or soda-lime silica glass comprising at least one of Sc, Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb or Lu and wherein the micro Vickers hardness of the glass ranges from about 599 to about 702.
Dependencies are inferred from the claim text.