منابع مشابه
Effects of fluoridation and disinfection agent combinations on lead leaching from leaded-brass parts.
This study concerns effects on water-borne lead from combinations of chlorine (CL) or chloramines (CA) with fluosilicic acid (FSA) or sodium fluoride (NaF). CL is known to corrode brass, releasing lead from plumbing devices. It is known that CA and CL in different ratios with ammonia (NH) mobilize copper from brass, which we have found also enhances elution of lead from leaded brass alloys. Pha...
متن کاملEffect OF SI and AL on the Microstructure, Mechanical Properties and Machinability of 65CU-35ZN Brass
Relations between the microstructure, mechanical properties and machinability of as-cast 65Cu-35Zn brass with various amounts of Al from 0 to 4.72 and Si from 0 to 3.62 wt% were investigated. Both Si and Al initially enhanced the UTS and toughness of the brass samples, which led to improvement in machinability due to a reduction in the main cutting force. A duplex brass with random oriented α p...
متن کاملSunset for Leaded Aviation Gasoline?
F lying in a small piston-engine plane bears little resemblance to flying in a commercial jet. There are no lines at the airport, no baggage checks, and often less legroom once you duck inside the cabin. You can feel every bump in the tarmac as the plane heads down the runway, every rumble of the engine. Once you are aloft there's no denying the improbability of flight; the low cruising altitud...
متن کاملSympathy or Brass Tacks
as A regional social worker for the Spastics Society I am increasingly aware of the diversity of my clients' needs, their dependence for facilities on specific geographical areas and the way local authorities interpret the statutory provisions. The knowledge that spasticity is irreversible makes an immediate impact. However I try I know I cannot change the status quo and this is the premise on ...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Precision Engineering
سال: 1959
ISSN: 0374-3543
DOI: 10.2493/jjspe1933.25.298_461