نتایج جستجو برای: zinc alloy

تعداد نتایج: 125146  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی موادو متالورژی 1386

در تحقیق حاضر با توجه به نقش موثر فیلتر گذاری در سیستم راهگاهی به منظور آرام سازی و تصفیه مذاب، به بررسی و مقایسه استحکام شکست خمشی و قابلیت اطمینان قطعات تولیدی با مذاب تصفیه شده با فیلتر، در مقایسه با قطعات خاصل از مذاب تصفیه نشده پرداخته شد. مبنای انجام پروژه موجود بر بارریزی صفحاتی با شرایط مختلف استوار بود. در مرحله اول با شیشه گذاری در یک سمت قالب از حرکت مذاب فیلم برداری شد. پس از تحلیل ...

2003
B. R. Pearson

inc alloy electrodeposits are finding increased acceptance as improved replacements for conventional electrogalvanized finishes. Zinc-nickel appears to be experiencing the most widespread use, although zinc-cobalt and zinc-iron also have well-defined market shares. The zinc-manganese system has not been widely reported; however, some investigators have examined its corrosion resistance, polariz...

Journal: : 2021

The processes of melt formation were studied by methods optical and electron scanning microscopy. These occur during induction brazing a hard alloy to steel holder contact interaction low-melting (copper-zinc system alloy) refractory (iron-nickel) components the solders. It is shown that effect thermal magnetic-dynamic high-frequency electromagnetic field on composite solder how high-strength j...

Journal: :Scientific American 1901

Journal: :Jitsumu Hyomen Gijutsu 1978

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2004
Takayuki Nakai Yoshiko Murakami Yoshiaki Sasaki Isamu Fujiwara Shoji Tagashira

The extraction and separation of copper(II), zinc(II), cobalt(II), and cadmium(II) were investigated. Both copper(II) and zinc(II) formed ammine-complexes, while cadmium(II) and cobalt(II) formed hydroxide precipitates in an ammonia medium. By the addition of sodium dodecylsulfate (SDS), a copper(II) complex formed an ion-pair (copper-ammine-DS), which was extracted into the SDS phase. However,...

2011
Ryan Winter

Since zinc die casting’s conception over 100 years ago, many new and improved developments have taken place to progress the industry and offer component designers a costeffective alternative to higher priced alloys and processes. The zinc industry has continued to develop new alloys in response to some of the challenges that face it. One such development is EZACTM, Eastern Alloys’ high strength...

Journal: :Conservar Património 2023

This study presents an analytical investigation and electrochemical conservation treatment for a group of four copper alloy artifacts excavated from the archaeological cemetery that was located on site Queen Alia International Airport, Jordan. The chemical analyses internal alloys showed bracelet spatula were made quaternary copper–zinc–tin–lead alloy, copper–silver–zinc copper–tin, bronze allo...

2003
W.

Zinc represents the most effective and economic corrosion protection especially for steel base materials. Improved corrosion resistance can be achieved by alloying zinc with small amounts (around 1 Yo) of transition metal elements like Co, Ni and Fe. Zn-Fe and Zn-Co alloys containing up to 1.5 Yo of the transition metal were plated using an alkaline and acidic electrolyte respectively. Zn-Ni al...

Journal: :Corrosion and materials degradation 2023

Aqueous zinc ions lower the corrosion rate of Alloy 600, which helps radiation dose in pressurized water reactors (PWRs). The influence on electrochemical behavior 600 PWR primary (PW) at 320 °C was investigated using a combination electron microscopy and impedance spectroscopy (EIS). Secondary (SEM) scanning transmission (STEM)/energy-dispersive X-ray (EDS) indicated duplex surface films were ...

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