1-20 of 477 Search Results for

absolute stability

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005209
EISBN: 978-1-62708-187-0
... an overview of interface stability as a function of composition for a given alloy. absolute stability morphological stability plane front solidification solidification silicon single crystals solid-liquid interface instability solute trapping PLANE FRONT SOLIDIFICATION (PFS...
Image
Published: 01 December 2008
Fig. 8 Stability diagrams for an Al-1at.%Fe alloy as a function of growth rate, V , ( G = 5 × 10 6 K/m). Source: Ref 28 . (a) Composition dependence of morphological and oscillatory instabilities showing complete morphological stability below 5 × 10 −3 at.%. Source: Ref 23 . (b More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005226
EISBN: 978-1-62708-187-0
... at very high solidification velocity independent of the temperature gradient. This is called absolute stability. Potentially unstable wavelengths of the perturbed interface shape become very small, inducing large curvatures where the Gibbs-Thomson effect stabilizes a planar interface. For Ag-1 and 5...
Image
Published: 01 January 2005
Fig. 11 Calculated phase diagram for Na 2 O-SiO 2 showing phases as a function of Na 2 O activity and absolute temperature. The critical boundary for stability of SiO 2 is in the lower portion of the diagram (bold line). Note that SiO 2 (s2) is quartz, and SiO 2 (s4) is tridymite. More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005348
EISBN: 978-1-62708-187-0
... velocity P pe´clet number Va velocity of absolute stability 1 in nity P pressure Vc velocity of constitutional under cooling Pa pascal V0 collision rate of atoms /R is proportional to; varies as PECB phenolic ester cold box V volume; velocity integral of pH negative logarithm of hydrogen-ion activity VAC...
Book Chapter

By Rob Bosman
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006381
EISBN: 978-1-62708-192-4
... oxidational stability, which limited their application. While much progress has been made concerning the formulation of lubricating greases, the general formulation of 90% of the applied greases remains the same; a thickener (typically a soap) with a concentration of approximately 10% is added to a base...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003735
EISBN: 978-1-62708-177-1
... and Mechanism of the Massive Transformation , Metall. Trans. A , Vol 15 , 1984 , p 437 – 447 10.1007/BF02644967 10. Lima M. and Kurz W. , Massive Transformation and Absolute Stability , Metall. Mater. Trans. A , Vol 33 , 2002 , p 2337 – 2345 10.1023/A:1013868620945 11...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005749
EISBN: 978-1-62708-171-9
... (absolute) psig pounds per square inch, gage pressure (pressure relative to ambient pressure) PSZ partially stabilized zirconia PTA plasma-transferred arc PUR polyurethane PVC polyvinyl chloride PVD physical vapor deposition Q thermal energy generated per unit...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... by physical scientists and the somewhat less strict sense normally used by materials engineers. In the strictest sense, homogeneous means that the physical properties throughout the region of space occupied by the phase are absolutely identical, and any change in condition of state, no matter how small...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006401
EISBN: 978-1-62708-192-4
...) as a function of a dimensionless parameter, H , such that: (Eq 4) H = η ω p where η is the absolute viscosity (expressed in units of pressure-time, Pa × s), ω is the rotational speed (rev/s), and p is the pressure (in units of Pa). The parameter H is known as the Hersey number. Lubrication...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006223
EISBN: 978-1-62708-163-4
... of Thermodynamics, and the Third Law of Thermodynamics. It informs that for transformations that occur at a constant temperature and pressure, the relative stability of the system is determined by its Gibbs free energy. The article describes the Gibbs free energy of a single-component unary system and the Gibbs...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006411
EISBN: 978-1-62708-192-4
...). Ester lubricants primarily comtain diesters silicate ester, polyglycol ester ( Ref 2 ), fluoro ester, neopentyl-polyol ester ( Ref 3 ), and aliphatic ester ( Ref 4 ). Due to their high thermal stability and oxidation resistance, they are mainly used as hydraulic fluid in the aircraft and gasturbine...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005210
EISBN: 978-1-62708-187-0
... and solute are rejected into the liquid so that negative temperature and concentration gradients are present in the liquid at the solid/liquid interface. As discussed by Kurz in the previous article, “Plane Front Solidification,” in this Volume, the stability of the interface at low velocity is controlled...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001409
EISBN: 978-1-62708-173-3
...: Group I alloys, which are the standard ferritic stainless steels; Group II alloys, which are modified versions of the standard alloys; and Group III alloys, which contain very low interstitial element (carbon, nitrogen, and oxygen) contents or stabilizing elements for improved corrosion resistance...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006920
EISBN: 978-1-62708-395-9
... transfer and deactivation process for quenchers Fig. 17 Peroxide radical deactivation process with a primary antioxidant (e.g., sterically hindered phenol) Fig. 18 Reaction of a hindered amine light stabilizer derivate with a peroxide radical to form a nitroxy radical Fig. 19...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006673
EISBN: 978-1-62708-213-6
... of temperature or time in a controlled atmosphere. The weight of the evaluated material can decrease due to volatilization or decomposition or increase because of gas absorption or chemical reaction. Thermogravimetric analysis can provide valuable information regarding the composition and thermal stability...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006362
EISBN: 978-1-62708-192-4
... with a compressible gas. The article also describes the different types of aerostatic bearings, such as annular thrust bearings and orifice-compensated journal bearings. It presents a discussion on load capacity and stiffness, friction and power loss, and stability and damping of the aerostatic bearings. The article...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005597
EISBN: 978-1-62708-174-0
... it an ion, or an electrically charged gas atom. All other factors held constant, the value of the ionization potential decreases as the molecular weight of the gas increases. Arc starting and arc stability are greatly influenced by the ionization potentials of the component shielding gases used...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001340
EISBN: 978-1-62708-173-3
... a gas atom—making it an ion, or an electrically charged gas atom. All other factors held constant, the value of the ionization potential decreases as the molecular weight of the gas increases. Arc starting and arc stability are greatly influenced by the ionization potentials of the component shielding...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006275
EISBN: 978-1-62708-169-6
... resistance in order to retain dimensional tolerances for the full service life. Battery grids also require improved hardness to withstand industrial handling. The absolute melting point of lead is 327.4 °C (621.3 °F). Therefore, in applications in which lead is used, recovery and recrystallization...