巻号一覧
19 巻, 2 号
選択された号の論文の7件中1～7を表示しています
- |<
- <
- 1
- >
- >|
-
野路 功二, 小田 照已1968 年 19 巻 2 号 p. 45-49
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーThis study was undertaken to find out the relation between the contents of aluminum and iron in galvanizing bath for the formation of alloy.
The following equation was obtained on the assumption that iron forms FeAl3-Zn alloy as floating fine dross in the bath.
CEAl=CTAl-1.45CFe
where CEAl: Aluminum content effective for preventing the formation of alloy
CTAl: Total aluminum content retained in the bath
CFe: Iron content floating as fine dross
According to the above equation, the minimum aluminum content effective for preventing the formation of alloy layer was 0.12% under the following experimental conditions: bath temperature of 450°C and dipping time of 50sec.抄録全体を表示PDF形式でダウンロード (1982K) -
電解コバルト-リンメッキ皮膜の熱処理による相変化 (第2報)神戸 徳蔵, 三谷 裕康, 庄司 啓一郎1968 年 19 巻 2 号 p. 50-54
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーIn the previous paper, the authors reported the phase changes in electrolytic Co-P deposits of high phosphor content during heat treatment.
This paper reports the changes in electrolytic Co-P deposits of low phosphor content and the following results were obtained.
1) The change in hardness of these deposits during heat treatment showed a similar behavior to that of the deposits of high phosphor content.
2) Electrolytic Co-P deposits were composed of hexagonal (α-) cobalt and face centred cubic (β-) cobalt, and they exhibited stronger orientation, particularly in α-Co (100) plane.
3) Judging from the X-ray diffraction pattern, it was confirmed that heat-treated electrolytic Co-P deposits had longer space distance than the deposits of no treatment.抄録全体を表示PDF形式でダウンロード (615K) -
拡散ステンレス鋼板に関する研究 (第1報)渡辺 孝, 寺前 章, 門 智, 鵜野 達二1968 年 19 巻 2 号 p. 55-59
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーDiffusion-coated stainless steels were obtained by the following procedures.
After composite coatings of Cr-Ni system were formed on low carbon steel (or Ti stabilized steel), the specimens were annealed under hydrogen atmosphere at the temperature of 1000-1200°C
The diffusion-coated stainless steel obtained by the above process had bright metallic lustre with slight milky appearance when the annealing was carried out under hydrogen atmosphere having dew point of about -40°C.
Austenite stainless steels were obtained when composite coatings of Cr (10μ)-Ni(2.5μ) were annealed at 1100°C under hydrogen atmosphere.抄録全体を表示PDF形式でダウンロード (996K) -
タングステン合金メッキに関する研究 (第1報)清水 輝夫, 椎尾 一1968 年 19 巻 2 号 p. 59-64
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーElectrically deposited nickel-tungsten alloys will broadly be applied in the industrial uses because of their high corrosion resistance. Tungsten forms alloys with nickel, cobalt, iron, etc. when it is deposited together with these metals.
Nickel-tungsten alloys were deposited from the bath containing Rochelle salt, sodium tungstate, nickel sulfate, nickel chloride, and boric acid. Ammonium sulfate, ammonium fluoride, and sodium fluoride were used as addition agents. When the mol ratio of Rochelle salt to sodium tungstate was 1:1-1:1.5, a large amount of alloys was deposited at pH 5.0 and at high temperature. When the above addition agents were added in the plating bath, current efficiencies of nickel and tungsten increased under low current density, but decreased under high current density.抄録全体を表示PDF形式でダウンロード (1850K) -
タングステン合金メッキに関する研究 (第2報)椎尾 一, 清水 輝夫1968 年 19 巻 2 号 p. 64-67
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーX-ray diffractometric measurements were made on Ni-W deposits. The composition of plating bath consisted of 250g/l of nickel sulfate, 30g/l of nickel chloride, 30g/l of boric acid, and various amounts of Rochelle salt and sodium tungstate. The study was carried out at pH 5.0 of the bath.
The lattice constants of the deposits obtained at 50°C agreed well with those of normal alloys of the same chemical composition and it was considered that the deposits were Ni-W alloys. However, the constants of the deposits obtained at 80°C were somewhat different from those of normal alloys.
Polarimetric investigations on mixed solution of sodium tungstate and tartaric acid showed that complex ion was formed when the ratio between the both substances was 1:1. However, measured value of optical rotary power slightly decreased with the lapse of time, which would suggest a gradual change in the constitution of complex ion. Perhaps, it would be concerned with the appearance of stress crack in the deposits obtained at 50°C with the lapse of time after the preparation of bath.抄録全体を表示PDF形式でダウンロード (503K) -
岡村 康弘, 雨宮 富平1968 年 19 巻 2 号 p. 68-72
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーMany methods of plating on aluminum alloys have been proposed, but most of the adhesion of plated films obtained by these methods still remains unexplained.
The authors evaluated the adhesive bond by tension test on the following 5 typical methods, and also investigated the effects of heat-treatment on adhesion.
1. Zincate method
2. Double zincate method
3. Nickel displacement plating method
4. Direct electroless nickel plating method
5. Vacuum evaporation method
As the results of these studies, the following conclusions were drawn.
(1) The greatest adhesive bond among the five was obtained by double zincate method. The tensile strength in this method was estimated to be equal to that of the mother aluminum alloy. For this reason, the above method was considered to be the most suitable for critical applications such as a cylinder, magnetic disc, and waveguide.
(2) The tensile strength in zincate method was 1, 300kg/cm2.
(3) The tensile strength in direct electroless nickel plating method was 370kg/cm2 as plated and it was found to be increased to 1, 100kg/cm2 by the effects of heat-treatment at 150°C for 4hr.抄録全体を表示PDF形式でダウンロード (1978K) -
今永 広人1968 年 19 巻 2 号 p. 73-78
発行日: 1968/02/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (840K)
- |<
- <
- 1
- >
- >|