Ceramifiable styrene-butadiene (SBR)-based composites containing low-softening-point-temperature glassy frit promoting ceramification, precipitated silica, one of four thermally stable refractory fillers (halloysite, calcined kaolin, mica or wollastonite) and a sulfur-based curing system were prepared. Kinetics of vulcanization and basic mechanical properties were analyzed and added as Suppleme...

As solar energy is a low-cost and clean source, there has been great deal of interest in how to harvest it. To absorb efficiently, we designed broadband metamaterial absorber based on the principle Fabry–Pérot (FP) cavities surface plasmon resonance (SPR). We propose perfect consisting four-layer structure silica–tungsten–silica–titanium (SiO2–W–SiO2–Ti) for incident light wavelength range 300–...

Refractory masonry (refractories) is exposed to in-service loads of different types. To rationalise the design and failure analysis, differences under cyclic monotonic loading were studied. For samples silica refractories tested in wedge splitting set-up global parameters crack trajectories assessed. Under loading, higher fracture energy lower brittleness at seen. Cracks modes had similar non-l...

OBJECTIVE To evaluate crystalline silica as a human carcinogen. METHODS A cohort of 5115 men, born 1916-45 and employed in the pottery, refractory, and sandstone industries of Stoke-on-Trent was identified from occupations subject to health surveillance by the local Silicosis Medical Board (now the Department of Social Security). Detailed occupational and smoking histories, and records of sma...

Mineralogical and chemical analyses of three textural varieties of pyrophyllite samples collected from Baliadihi mine of Keonjhar district, Orissa, India are investigated. Mineralogically they consist of quartz, pyrophyllite, altered feldspar as major minerals and muscovite, chlorite, tourmaline, hematite etc. as minor minerals. The samples exhibit compositional variation of SiO2 65.56 71.66%, ...

Abstract. Diatoms are an extraordinarily successful group of organisms and their many thousands species have diversified specialized so as to occupy every environmental niche. Part success derives from unique protective cell walls, beautifully elaborate structures made pure silica. However, living inside walls this rigid, refractory material creates problems. Just how diatoms circumvent these p...

The goal of this project was to develop a novel technology that may be used to eventually manufacture a new generation of inorganic membranes and sensors with oriented, uni-directional monosized pores. The premise is that very thin membranes with oriented channels as pores will have a high flux in addition to being highly selective. Applications include: 1) gas separation membranes for oxygen e...

Binder Jetting is an Additive manufacturing (AM) technique in which binding liquid jetted on layers of powdered materials, selectively according to the Computer Aided Design (CAD) model form a 3D part. One applications binder jetting technology sand moulds for casting known as Rapid Sand Casting. Silica often used both Casting and traditional moulding due its good refractory properties coupled ...

This article analyzes the mechanism of protective layer formation under action alkali in a refractory castable when ground quartz sand (GQS) is used as an admixture to produce conventional castables (CC) and medium cement (MCC). It was found that, independently composition, addition GQS (2.5%) reduces degree K2CO3 dissolution at high temperature, released potassium reacts with silica forms visc...

The major objective in glass tank melters is to optimize the entire process by reducing the maximum temperature of melting, improving refractory performance and/or improving melter fuel efficiency. The required characteristics of refractories used in melters are: thermal shock resistance, corrosion resistance, controlled expansion behavior, low thermal conductivity, and adequate creep resistanc...